CN214837875U - Bearing retainer - Google Patents
Bearing retainer Download PDFInfo
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- CN214837875U CN214837875U CN202121137899.3U CN202121137899U CN214837875U CN 214837875 U CN214837875 U CN 214837875U CN 202121137899 U CN202121137899 U CN 202121137899U CN 214837875 U CN214837875 U CN 214837875U
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- oil storage
- storage tank
- frame beam
- retainer
- bearing
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Abstract
The application relates to a bearing retainer, and belongs to the technical field of bearings. It is including a plurality of ball pockets that supply the ball to place and being located adjacent two frame roof beam between the ball pocket, at least one oil storage tank has been seted up to the frame roof beam, and is a plurality of the oil storage tank sets up along the direction of rotation of holder. When the bearing is used, the oil storage groove of the retainer is filled with lubricating grease, when the retainer rotates between the inner ring and the outer ring, the lubricating grease in the oil storage groove slowly flows out of the oil storage groove to lubricate the rotating body and the retainer, so that the rolling between the rotating body and the retainer is smoother, the heat generated by rolling friction is reduced, the temperature of the bearing is not easy to rise, and the service life of the bearing is prolonged; meanwhile, the weight of the retainer is reduced due to the arrangement of the oil storage tank, so that the rotating speed of the retainer is higher, and the higher rotating speed of the retainer in a specific process is met.
Description
Technical Field
The application relates to the technical field of bearings, in particular to a bearing retainer.
Background
The bearing is a weight part in the current mechanical equipment. The main function of the bearing is to support the mechanical rotator, reduce the friction system in the movement process of the mechanical rotator and ensure the rotation precision of the mechanical rotator.
In the related art, a bearing generally includes an outer ring, an inner ring, a cage disposed between the outer ring and the inner ring, and a plurality of rolling elements mounted on the cage. The bearing has a wide application range and different requirements on the bearing in different environments, wherein the requirement on the bearing in an electric driving system of an electric automobile is higher, and the rotating speed of the bearing in a high-speed motor of the system is higher and is more than twice of the limit rotating speed of a common bearing.
In view of the above-mentioned related art, the inventor believes that the higher the rotation speed of the bearing, the larger the centrifugal force of the cage, the larger the centrifugal force makes the rolling friction between the rolling elements inside the bearing and the cage larger, the more the extra frictional heat is generated, the temperature of the bearing rises sharply, and the service life of the bearing is reduced.
Disclosure of Invention
In order to solve the problem of reducing bearing life, the application provides a bearing retainer.
The application provides a bearing retainer adopts following technical scheme:
the utility model provides a bearing retainer, includes a plurality of ball pockets that supply the ball to place and be located adjacent two frame roof beam between the ball pocket, at least one oil storage tank has been seted up to the frame roof beam, and is a plurality of the oil storage tank sets up along the direction of rotation of retainer.
By adopting the technical scheme, when the bearing is used, the oil storage groove of the retainer is filled with lubricating grease, when the retainer rotates between the inner ring and the outer ring, the lubricating grease in the oil storage groove slowly flows out of the oil storage groove to lubricate the rotating body and the retainer, so that the rolling between the rotating body and the retainer is smoother, the heat generated by rolling friction is reduced, the temperature of the bearing is not easy to rise, and the service life of the bearing is prolonged; meanwhile, the weight of the retainer is reduced due to the arrangement of the oil storage tank, so that the rotating speed of the retainer is higher, and the higher rotating speed of the retainer in a specific process is met.
Optionally, the frame beam is provided with an oil storage tank, and the oil storage tank is arranged on the outer side wall of the frame beam or on the inner side wall of the frame beam.
Through adopting above-mentioned technical scheme, an oil storage tank can be seted up on the lateral wall of frame roof beam, also can set up on the inside wall of frame roof beam, and the staff can carry out different designs according to actual conditions.
Optionally, two oil storage tanks are arranged, and the two oil storage tanks are respectively arranged on the outer side wall of the frame beam and the inner side wall of the frame beam.
Through adopting above-mentioned technical scheme, two oil storage tanks make the weight of holder lighter, and the oil reserve on the holder is bigger, and the temperature when making the bearing use is difficult for rising, further improves the life of bearing.
Optionally, the oil storage tank is communicated with the top surface of the frame beam, and the oil storage tank is communicated with the bottom surface of the frame beam.
Through adopting above-mentioned technical scheme, the back is link up with the bottom surface of the top surface of frame roof beam, oil storage tank and frame roof beam to the oil storage tank, and the volume of oil storage tank is bigger, makes the lubricating grease that the oil storage tank can store more.
Optionally, the oil storage tank is communicated with the top surface of the frame beam or the bottom surface of the frame beam.
By adopting the technical scheme, after the oil storage tank is communicated with the top surface of the frame beam or the bottom surface of the frame beam, more grease is stored in the oil storage tank; meanwhile, compared with the situation that the top surfaces of the oil storage tank and the frame beam and the bottom surfaces of the oil storage tank and the frame beam are all communicated, the overall structural strength of the frame beam is higher.
Optionally, a groove wall of the oil storage groove close to the ball pocket is a bending surface, and an included angle between the bending surface and the groove wall of the oil storage groove is 95-175 °.
By adopting the technical scheme, the included angle between the bending surface and the oil storage groove is 95-175 degrees, compared with the oil storage groove without the bending surface, the oil outlet speed of the oil storage groove is higher, and grease in the oil storage groove can flow out as much as possible.
Optionally, the ratio of the depth of the oil storage tank to the thickness of the frame beam is 0.2-0.7.
By adopting the technical scheme, if the oil storage tank is too deep, the thickness of the frame beam is too thin, and the overall strength of the frame beam is not enough; if the oil storage tank is too shallow, the oil storage capacity of the oil storage tank is small, the temperature of the bearing rises quickly, the ratio of the oil storage tank to the thickness of the frame beam obtained according to actual tests is 0.2-0.7, and the optimal state is achieved, so that the oil storage capacity of the oil storage tank is met, and the actual use thickness of the frame beam is met.
Optionally, the bottom surface of the frame beam is recessed between the bottom surfaces of two adjacent ball pockets.
By adopting the technical scheme, the bottom surface of the frame beam is recessed between the two adjacent ball pockets, so that the whole weight of the retainer is reduced, and the retainer meets the use requirement of a high-speed bearing.
Optionally, the bottom surface of the frame beam is connected with the bottom surface of the ball pocket through an arc surface, and the arc surface is concentric with the inner side wall of the ball pocket.
Through adopting above-mentioned technical scheme, pass through the cambered surface between the bottom surface of frame roof beam and the bottom surface of ball pocket and be connected, improve the pleasing to the eye degree of holder.
In summary, the present application includes at least one of the following beneficial technical effects:
1. lubricating grease is filled in the oil storage groove of the retainer, and when the retainer rotates between the inner ring and the outer ring, the lubricating grease in the oil storage groove slowly flows out of the oil storage groove to lubricate the rotating body and the retainer, so that heat generated by rolling friction is reduced, the temperature of the bearing is not easy to rise, and the service life of the bearing is prolonged;
2. the oil storage tank is arranged, so that the weight of the retainer is reduced, the rotating speed of the retainer is higher, and the higher rotating speed of the retainer in a specific state is met;
3. the optimal state is that the ratio of the thickness of the oil storage tank to the thickness of the frame beam is 0.2-0.7 according to actual tests, so that the oil storage capacity of the oil storage tank is met, and the actual use thickness of the frame beam is also met.
Drawings
Fig. 1 is a schematic view of the overall structure of a cage according to an embodiment of the present application.
Fig. 2 is a schematic structural view illustrating a structure in which an oil reservoir is formed in an outer side wall of a frame girder according to an embodiment of the present invention.
Fig. 3 is a schematic structural view illustrating a structure in which an oil reservoir is formed in an inner side wall of a frame beam according to an embodiment of the present invention.
Fig. 4 is a graph of the ratio of the depth of the reservoir to the thickness of the frame rail according to the example of the present application.
Fig. 5 is a schematic structural view of a top surface of a frame rail according to an embodiment of the present application.
Fig. 6 is a schematic structural view of a bottom surface of a frame beam according to an embodiment of the present application.
Fig. 7 is a schematic view of the reservoir communicating with the top surface according to the embodiment of the present application.
Fig. 8 is a schematic view of the structure in which the oil reservoir is connected to both the top surface and the bottom surface according to the embodiment of the present application.
Fig. 9 is a schematic view of the structure in which the reservoir is not connected to the top surface and the bottom surface according to the embodiment of the present application.
Fig. 10 is a graph of the ratio of the width of the reinforcing bars to the height of the frame beams according to the embodiment of the present application.
Fig. 11 is a plan view of an oil reservoir according to an embodiment of the present application.
Fig. 12 is a plan view of another state of the reservoir according to the embodiment of the present application.
Fig. 13 is a plan view of a third state of the oil reservoir according to the embodiment of the present application.
Fig. 14 is a graph of alpha versus oil reserve according to an embodiment of the present disclosure.
Description of reference numerals: 1. a ball pocket; 11. a pocket hole; 12. a ball inlet; 2. erecting a beam; 21. an oil storage tank; 22. reinforcing ribs; 23. a bending surface; 24. a separation line; 3. and (5) connecting the surface.
Detailed Description
The present application is described in further detail below with reference to figures 1-14.
The embodiment of the application discloses a bearing retainer, which is applied to a ball bearing, wherein the bearings mentioned in the embodiment refer to the ball bearing.
Referring to fig. 1, the retainer includes a plurality of ball pockets 1 and a plurality of frame beams 2, and ball pocket 1 has the pocket 11 that supplies the ball to place, and frame beam 2 is located between two adjacent ball pockets 1, and ball pocket 1 and frame beam 2 an organic whole set up.
The frame beam 2 is provided with oil storage tanks 21 for containing lubricating grease, and the oil storage tanks 21 are arranged along the rotation direction of the retainer. Wherein, the number of frame roof beam 2 can be odd or even, and oil storage tank 21 has all been seted up to each frame roof beam 2.
In another embodiment, the number of the frame beams 2 is even times the number of the oil reservoirs 21, one oil reservoir 21 is arranged in every two or four or even eight frame beams 2, and the number of the frame beams 2 spaced between two adjacent oil reservoirs 21 is the same for stabilizing the rotation of the cage.
The number of the oil storage tanks 21 on the frame beam 2 may be one or two. In one embodiment, there are two oil reservoirs 21, and the two oil reservoirs 21 are respectively opened on the inner side wall of the frame beam 2 and the outer side wall of the frame beam 2.
Referring to fig. 2 and 3, in another embodiment, one oil reservoir 21 is provided, and the oil reservoir 21 is opened on the outer side wall of the girder 2.
In another embodiment, the oil reservoir 21 is one, and the oil reservoir 21 is opened on the inner side wall of the frame beam 2. In order to increase the oil storage capacity of the retainer, two oil storage tanks 21 are provided for each frame beam 2 in this embodiment.
Referring to fig. 4, the width of the girder 2 is from the inner sidewall of the girder 2 to the outer sidewall of the girder 2, and the sum of the depths of the two sumps 21 accounts for 40% of the width of the girder 2. The wall of the oil storage tank 21 close to the ball pocket 1 is an outward inclined surface, and the ratio of the depth of the oil storage tank 21 to the thickness of the frame beam 2 is 0.2-0.7.
When the depth of the oil storage tank 21 is deep, the whole thickness of the frame beam 2 is thin, so that the structural strength of the frame beam 2 is low, and when the depth of the oil storage tank 21 is shallow, the oil storage amount of the oil storage tank 21 is small, and a worker needs to frequently add lubricating oil. Therefore, the ratio of the depth of the oil storage tank 21 to the thickness of the frame beam 2 is 0.2-0.7, and in actual production, the ratio of the depth of the oil storage tank 21 to the thickness of the frame beam 2 is generally 0.4, so that the structural strength of the frame beam 2 can be met, and the oil storage tank 21 can store more lubricating oil.
In addition, the oil reservoir 21 may be a square, a cylinder, or a polygon, and may be any shape capable of containing lubricating grease. In order to facilitate opening of the oil storage tank 21, the oil storage tank 21 is a square body in this embodiment.
Referring to fig. 5 and 6, each ball pocket 1 has a ball inlet 12 communicating with the pocket hole 11, and defines a side surface of the frame beam 2 close to the ball inlet 12 as a top surface, a side surface of the frame beam 2 far from the ball inlet 12 as a bottom surface, and a side surface of the ball pocket 1 far from the ball inlet 12 as a bottom surface. The bottom surface of the frame beam 2 is recessed between the bottom surfaces of two adjacent ball pockets 1, so that one side of the retainer departing from the ball inlet 12 is wavy.
And the bottom surface of the frame beam 2 is connected with the bottom surface of the ball pocket 1 through a connecting surface 3, and the connecting surface 3 is a cambered surface concentric with the inner side wall of the ball pocket 1.
See fig. 7, in which the oil reservoir 21 is in communication with the top surface of the frame rail 2. In another embodiment, the oil reservoir 21 is communicated with the bottom surface of the frame beam 2; referring to fig. 8, in another embodiment, the oil reservoir 21 is communicated with both the top surface of the girder 2 and the bottom surface of the girder 2; referring to fig. 9, in another embodiment, the oil reservoir 21 is not connected to both the top surface of the girder 2 and the bottom surface of the girder 2.
Referring to fig. 7, when the oil reservoir 21 is communicated with the top surface of the frame beam 2, the frame beam 2 is provided with a reinforcing rib 22 for blocking the oil reservoir 21 from being communicated with the bottom surface of the frame beam 2; similarly, when the oil reservoir 21 is connected to the bottom surface or the oil reservoir 21 is not connected to the top surface or the bottom surface, the frame member 2 is provided with the reinforcing ribs 22, and the structural strength of the entire frame member 2 is improved by the reinforcing ribs 22. Since part of the balls protrude from the ball pocket 1 when the balls are mounted in the ball pocket 1, the oil storage tank 21 in this embodiment is communicated with the top surface of the frame beam 2, so that the grease in the oil storage tank 21 can more easily flow out from the oil storage tank 21 and lubricate the balls.
Referring to fig. 10, the width of the rib 22 is defined as the direction from the top surface of the frame member 2 to the bottom surface of the frame member 2 among the ribs 22, the height of the frame member 2 is defined as the direction from the top surface of the frame member 2 to the bottom surface of the frame member 2, the ratio of the width of the rib 22 to the height of the frame member 2 is 0.2 to 1.0, and the structural strength of the entire cage is improved by the rib 22.
When the width of the reinforcing rib 22 is larger, the depth of the oil storage tank 21 is shallower, the oil storage amount of the oil storage tank 21 is smaller, the service life of the bearing is shorter, and lubricating oil needs to be added frequently by workers; when the width of the reinforcing rib 22 is smaller, the overall structural strength of the frame beam 2 is lower, which affects the service life of the bearing, and therefore, the ratio of the width of the reinforcing rib 22 to the height of the frame beam 2 is 0.2-1.0. In actual production, the ratio of the width of the reinforcing rib 22 to the height of the frame beam 2 is generally 0.3, which not only can satisfy the structural strength of the frame beam 2, but also can enable the oil storage tank 21 to store more lubricating oil.
Referring to fig. 11, a groove wall of the oil storage groove 21 close to the ball pocket 1 is a bending surface 23, the bending surface 23 is a plane, a groove bottom of the oil storage groove 21 is a plane, a line segment a parallel to the groove bottom of the oil storage groove 21 and a line segment B parallel to the bending surface 23 are arranged when the top surface of the frame beam 2 is a main view, an included angle between a and B is alpha, and alpha is 5-85 °.
Referring to fig. 12, in another embodiment, the bending surface 23 is an inward curved surface, the bottom of the oil storage groove 21 is a flat surface, and when viewed from the top surface of the frame beam 2 as a front view, a line segment a1 parallel to the bottom of the oil storage groove 21 is provided, a line connecting a side of the bending surface 23 close to the oil storage groove 21 to a side of the bending surface 23 away from the oil storage groove 21 is a line segment B1, and an included angle between a1 and B1 is an1，ɑ1Is 5-85 degrees.
Referring to fig. 13, in another embodiment, the bending surface 23 is a concave arc surface, and the bottom of the oil storage groove 21 is also a concave arc surface, wherein the arc surface of the bending surface 23 and the arc surface of the bottom of the oil storage groove 21 may be concentric or different, and for convenience of actual production, the arc surface of the bending surface 23 and the arc surface of the bottom of the oil storage groove 21 are generally concentric. If the arc surface of the bending surface 23 is concentric with the arc surface of the oil storage groove 21, the oil storage groove 21 is a complete arc surface, the separation line 24 is arranged in the middle of the oil storage groove 21, the separation line 24 can be regarded as the bottom of the oil storage groove 21, and two smaller arc surfaces separated by the separation line 24 are the bending surfaces 23. The top surface of the frame beam 2 is viewed from the front, and a tangent line A2, A2, which is tangent to the dividing line 24 in the oil reservoir 21, is similar to the line segments A and A1 in the previous two embodiments, and the line segment B2, B2 and the line segment B2 are connected with the side of the bending surface 23 away from the dividing line 24In the first two embodiments, the line segment B and the line segment B1 are similar, and the included angle between a2 and B2 is a2，ɑ2Is 5-85 degrees.
Referring to fig. 14, the angles α, α 1, and α 2 have the same range and similar effects, and α is described as an example in the following embodiments. When alpha is smaller, the depth of the oil storage tank 21 is shallower, the oil storage amount of the oil storage tank 21 is smaller, and lubricating oil needs to be frequently added by workers; when a is large, the depth of the oil storage tank 21 is deep, but the oil yield of the oil storage tank 21 is low, and the lubricating oil in the oil storage tank 21 is difficult to flow out from the oil storage tank 21, because when the outflow of the lubricating oil in the oil storage tank 21 is slow, the temperature of the bearing rises quickly after long-term operation, and the service life of the bearing is also low. In actual production, α is generally 45 °, and at this time, the oil storage tank 21 can store a large amount of lubricating oil, and the lubricating oil can flow out of the oil storage tank 21 relatively smoothly.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A bearing retainer characterized in that: including a plurality of ball pockets (1) that supply the ball to place and be located adjacent two frame roof beam (2) between ball pocket (1), at least one oil storage tank (21) have been seted up in frame roof beam (2), and are a plurality of the rotation direction setting of holder is followed in oil storage tank (21).
2. A bearing retainer according to claim 1, wherein: an oil storage tank (21) is arranged on the frame beam (2), and the oil storage tank (21) is arranged on the outer side wall of the frame beam (2) or on the inner side wall of the frame beam (2).
3. A bearing retainer according to claim 1, wherein: two oil storage tanks (21) are arranged, and the two oil storage tanks (21) are respectively arranged on the outer side wall of the frame beam (2) and the inner side wall of the frame beam (2).
4. A bearing retainer according to claim 1, wherein: the oil storage tank (21) is communicated with the top surface of the frame beam (2), and the oil storage tank (21) is communicated with the bottom surface of the frame beam (2).
5. A bearing retainer according to claim 1, wherein: the oil storage tank (21) is communicated with the top surface of the frame beam (2) or the bottom surface of the frame beam (2).
6. A bearing retainer according to claim 1, wherein: the wall of the oil storage groove (21) close to the ball pocket (1) is a bending surface (23), and the included angle between the bending surface (23) and the wall of the oil storage groove (21) is 95-175 degrees.
7. A bearing retainer according to claim 1, wherein: the wall of the oil storage tank (21) close to the ball pocket (1) is an inclined surface inclining outwards, and the ratio of the depth of the oil storage tank (21) to the thickness of the frame beam (2) is 0.2-0.7.
8. A bearing retainer according to claim 1, wherein: the bottom surface of the frame beam (2) is concave between the bottom surfaces of the two adjacent ball pockets (1).
9. A bearing retainer according to claim 8, wherein: the bottom surface of the frame beam (2) is connected with the bottom surface of the ball pocket (1) through an arc surface, and the arc surface is concentric with the inner side wall of the ball pocket (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121137899.3U CN214837875U (en) | 2021-05-25 | 2021-05-25 | Bearing retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121137899.3U CN214837875U (en) | 2021-05-25 | 2021-05-25 | Bearing retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214837875U true CN214837875U (en) | 2021-11-23 |
Family
ID=78775428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121137899.3U Active CN214837875U (en) | 2021-05-25 | 2021-05-25 | Bearing retainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214837875U (en) |
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2021
- 2021-05-25 CN CN202121137899.3U patent/CN214837875U/en active Active
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